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authorLukas Larsson <[email protected]>2016-05-11 11:16:16 +0200
committerRickard Green <[email protected]>2016-05-11 16:48:37 +0200
commit3471d44a6a5ed5ab038c4cdc76b350119fe745e2 (patch)
tree629de2dea305b83ee00d685cffe6b8e9533eb7d7 /erts/preloaded/src/erl_tracer.erl
parent4aea719054a594a06aceb34afca0ea3df65ead77 (diff)
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erts: Only allow remove from trace_status callback
Make it so that it is only possible to remove a tracer via returning remove from an erl_tracer. This limition is put in place in order to avoid a lot of lock checking and taking in various places, especially in regards to trace events happening on dirty schedulers.
Diffstat (limited to 'erts/preloaded/src/erl_tracer.erl')
-rw-r--r--erts/preloaded/src/erl_tracer.erl8
1 files changed, 6 insertions, 2 deletions
diff --git a/erts/preloaded/src/erl_tracer.erl b/erts/preloaded/src/erl_tracer.erl
index de1e9ca01e..fe15812535 100644
--- a/erts/preloaded/src/erl_tracer.erl
+++ b/erts/preloaded/src/erl_tracer.erl
@@ -41,10 +41,14 @@ on_load() ->
%%% NIF placeholders
%%%
--spec enabled(Tag :: trace_tag() | seq_trace | trace_status,
+-spec enabled(Tag :: trace_status,
TracerState :: tracer_state(),
Tracee :: tracee()) ->
- trace | discard | remove.
+ trace | remove;
+ (Tag :: trace_tag() | seq_trace,
+ TracerState :: tracer_state(),
+ Tracee :: tracee()) ->
+ trace | discard.
enabled(_, _, _) ->
erlang:nif_error(nif_not_loaded).